fester_1
Junior Member
get right to it. i use hayes 4b-4 page and it states on tbi system i have 4 relays on fender. i seem to be missing the part throttle unlock relay. i have a 91 dodge ram250 truck , coil mounted on firewall btw. is this optional relay?
2. fuel pump mysteriously quit over winter just sitting, tested 83159 asd relay and have 12v on 30 red wire, 12 v on 2 blue 86 wire , 87a is cropped off at factory, 87 is green black and 85 blue yellow, i got 90 ohms on relay coil 86-85,good, and 30-87 is normally open and that was good. i also bench tested relay and it was good. is their a fuel pump relay and if so where. the 4b-4 page shows a fuel injected system also and it is in the row of relays for that engine.
3. their is 3 connectors under the hood hinge that arent used a 2 wire green/brown and 2 black , a L shape connector 2 blue,black/white,green,and pink wires, and then one identical to asd at 87 blue/white.30 blue,86 2 blue,85 2 orange/black is this fuel pump relay or part throttle unlock relay or just a test port.
4 fuel pump itself 4 wire connector green/black,blue/yellow,2 white that go to 1 white spliced, i assume the white is ground. it looks like green/black goes to orange wire on pump and 1 of the whites goes to black wire on the pump. the blue/yellow and other white wire goes to sending unit. so if i put 12v to green wire and ground white wire pump should come on. I have removed pump already.would like to bench test it to see if i messed it up with jumper wires.
2. fuel pump mysteriously quit over winter just sitting, tested 83159 asd relay and have 12v on 30 red wire, 12 v on 2 blue 86 wire , 87a is cropped off at factory, 87 is green black and 85 blue yellow, i got 90 ohms on relay coil 86-85,good, and 30-87 is normally open and that was good. i also bench tested relay and it was good. is their a fuel pump relay and if so where. the 4b-4 page shows a fuel injected system also and it is in the row of relays for that engine.
3. their is 3 connectors under the hood hinge that arent used a 2 wire green/brown and 2 black , a L shape connector 2 blue,black/white,green,and pink wires, and then one identical to asd at 87 blue/white.30 blue,86 2 blue,85 2 orange/black is this fuel pump relay or part throttle unlock relay or just a test port.
4 fuel pump itself 4 wire connector green/black,blue/yellow,2 white that go to 1 white spliced, i assume the white is ground. it looks like green/black goes to orange wire on pump and 1 of the whites goes to black wire on the pump. the blue/yellow and other white wire goes to sending unit. so if i put 12v to green wire and ground white wire pump should come on. I have removed pump already.would like to bench test it to see if i messed it up with jumper wires.
